The governments of the world conspire to keep the news of the end of the world from their populations. This is the premise of a Hollywood disaster movie. Fear of panic , mass hysteria and the complete breakdown of law and order persuades governments around the world to keep the impending doom an official secret. The worlds greatest scientists race to come up with a plan to save the planet.
In a crisis it is even more important to address people’s anxiety and fear. This is best achieved by not attempting to down play the seriousness of the situation but providing reassurance that effective measures are in place to deal with this crisis.
This will be a lot easier if the leader has a track record that has established their integrity and earned the trust of citizens.